Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
) t+ w& d$ ~- b1 TNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 ! ]8 u2 U2 ]7 e) e% A3 p
+ Author Affiliations
: o/ ~; O; X! [8 D: l M! U9 g/ Q) b. @) V7 Z
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan
, z% N( E4 T- d& e+ U4 G2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
) ~7 E! N& C% H' z( @* s9 A) R3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan ) T% S+ h" R+ v" p
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan # I0 @$ Q: L# x- Z. P3 H/ q! M( ?
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
2 f) g* O: y! V" L" V+ S7 P, {6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
A9 V4 g+ R: P: T7Kinki University School of Medicine, Osaka 589-8511, Japan 8 E, d' m7 \5 P& o) O8 d
8Izumi Municipal Hospital, Osaka 594-0071, Japan
9 f& o, S4 ^$ \6 l+ k9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan
, w4 ^3 M$ f# [4 d6 ]! n( BCorrespondence to: Nobuyuki Yamamoto, Division of Thoracic Oncology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan. Tel: +81 559895222, Fax: +81 559895783, e-mail: n.yamamoto@scchr.jp 9 V$ d/ y- ]$ F8 w
AbstractBackground: The antimetabolic agent S-1 inhibits thymidylate synthase similar to pemetrexed, but through a different mechanism of action. Whether the antitumour activity of S-1 depends on histological type remains unclear. We analysed pooled data from 2 phase II clinical studies of cisplatin and S-1 in patients with previously untreated advanced non-small cell lung cancer. Patients and Methods: We comprised 110 patients with stage IIIB or IV non–small cell lung cancer. Univariate and multivariate analyses were performed to determine the effects of histological type on progression-free survival and response rates. Results: On pooled analysis of the data, according to histological type, median progression-free survival was 3.8 months in patients with squamous cell carcinoma and 4.4 months in those with non-squamous cell carcinoma. Both analyses showed that progression-free survival and response rate did not differ significantly. Conclusion: Unlike molecular targeted agents and pemetrexed, a combination of cisplatin and S-1 may be no difference in response according to histological type.
1 m" r9 \& ~: i0 W/ q8 r
. v5 g& |( k) O* I K' o. m |